Bolt heading machine



J, ROOT. BOLT HEADING MACHINE.

Patented Mar. 3, 1868.

nit-2h tans gaunt ifi'rz,

JOBNROOT, O NEW'H EN, CONNECTICUT, ASSIGNOR TOIHIMSELF AND:

MeLAGON. &- STEVENS, OF'SAME PLACE.

' Letters Patent m. "(sues-amazed); 3,186.8;

en .Bflgzhxils niemh to 1mm 3am stunt imh making girth} 11;: same.

10 ALL WHOM IT MAI-CONCERN:

Be it known that I, Jomt Room, of New Haven, in the county of New Haven,and State of. Connecticut; have 'inrenteda new Improvement inBolt-Heading Maehines QandI'do hereby declare the following, when takenin canteen with the accernpany'ing drawings and the letters of referencemarked thereon, to be a full,- clear, and exactdescription of the smile,and which said drawings cens'titutepart hf this snecifieation, andrepresent, in-

Figure 1, a side view, Figure 2a rep View, and in vFigures 8 and 4detached views. I I

This invention relates to im improvementin the machine int-headingbolts, for which Letters Patent were granted to me, dated October29,1867, and consists, first, in the man'ner of operating'zthe jaws ordies, and,

second,-'in adjusting the crowner duringjts operation. I v

In-ordento the clear underst'anding of my invention, as well as toenahleothers. to construct the same, I :willproceed to a description thereof,as illustrated inthejaccompanyingdrawin gs. y A is the. bed-Plate; uponits upper sui'face are arranged thefour dies q'attached' to slides 15,and operated throngh lever c by, means of .a cylinder, B, as seen infig. 1. The cylinder is urranged'to move vertically by rneans of a camorcrank, G ,.on the shaft-D, so that, by thepreirolutjion off t'hesaidcfrank or cam, the cylinder B Inches up and down, being arranged insuitable guides'to rete'in'it in its properyertjcalpbsition. Upon thesaid cylinder B; and corresponding to the lever c, nrojecti'qns'f ateformed,"so that the dowuwardpaovement bf the" oa in foi'oe s. thelowerend ot thelevers a' outwarij ns'denoted inred,- and'a'.g roove or red,corresponding to the hid hrejeetions,.azid'attached to the lower endofthe levers rc', ser.ves 'to dfaw in the lower end of the said leverswhenthe eaid cam is raised, as denoted in'fig. 1; Theforcing out of thelower. end of the levers closes the diesel," and vs'cc'versa; thus a.positive rnov ement is given to thefsn id dies, and may be adjusted byraising or lowering the-cam. I Otherwise thisipart of the machine isconstructed the same as in my patent before referred to. E, the crownerordie fo'r finishing the'top of the h'ead ofthebolh-is nrranged npon a.vertical slide, F, cperated hyaearn, G, on theshaft 1), througha-l'ever, H, .whichhas. its fulcrum at i'in an adjustable block, I,so'that,-' by the operation of the cam G, the die or crowner is foi;ceddown-hard n'ponthe top of. the -bolt-bend. As it is advisable to givetwo orm'ore blows to the top of the heajd -the second depressing morethan the first as also to ydjustthe cro'wner to a differentthicknessoflhend, I miike the block I, adjhstahle, so that, by raisingor lowering vthe said block I, the crewner is carriedi ar-ther from orhroug'ht'nearer tditheibolt head, and this I do by hanging sthesaidblock I neon an eccdntri mL, as seen iniig. 3, s'oth'at, by turningthe eccentric, L, bym ea ns of the lever M, as fromthe positionin fig. 3to that in fig. 4, the crowner will be thrown down to its lowest point,and this 'inay be done .d'uring thc operation of the niachine, so that,whatevermnybe the quantity ofi'inetal within the dies, the head n' myihe perfectly finished by the oper tion ofthe adjusting-downer so tordo;or the eccentric he set at a given point and force the head to thethickness allowed by such "adjustment. 3 Having thus fully describedmy'invention, what I claim-as new end useful, and desire to secure byLetters 1. The arrangement of the dylindor B, with its projeetionsf, thelevers c, 'and die-holders b, so as to force up and" withdraw th saiddie-holders, in the manner substantially'ns described.

2. The combination of the slide F, fnlcrlirn-pim z, block I, ande'ccentiic', L, with the lever H, alias-herein, described 'and for "thepurpose set forth.

. JQH'N ROOT.-

